Http://home.maine.rr.com/rlma/Strider0605.htm#Leak

This is a perfect example of Long's First Law of Malfunctions. The
first cause you find won't be the problem.

When your computer stops working and you look behind it to discover
that the cord has been knocked out of the socket, that won't be why it
stopped. It will be a corrupted registry, CMOS amnesia, or something
like that.

I'm sure those snaps were leaking a bit although probably just making
my headliner damp and maybe contributing a little bit to the berth
puddle.

--

Roger Long

On Tue, 16 May 2006 19:38:53 GMT, in message

"Roger Long" wrote:

Http://home.maine.rr.com/rlma/Strider0605.htm#Leak

This is a perfect example of Long's First Law of Malfunctions. The
first cause you find won't be the problem.

The first cause won't be *all* of the problem.

My boat is getting drier and drier with every little step along the
way. Feel good about fixing things even when they don't entirely solve
the problem.

Sailing hard last season lead to excess water in the bilge. We
eventually connected that to a shortage of water in the fresh water
tanks. This spring I found a crack in a poly fitting on the tank that
hardly leaked at all sitting in harbour.

Which reminds me that I still need to caulk those openings in the
anchor locker ;-)

Oh, and I agree with your other correspondent that pulling props is a
black art. I managed to deform the end of a shaft with a puller in the
process of tackling a prop change. Heat and well applied impact loads
seem to be important. I had no big problem removing the fixed prop
with about a 2 1/2 inch shaft contact, but removing the Gori folder
with more like 4 inches of contact was beyond me.

Ryk

In article , Ryk
wrote:

On Tue, 16 May 2006 19:38:53 GMT, in message

"Roger Long" wrote:

Http://home.maine.rr.com/rlma/Strider0605.htm#Leak

This is a perfect example of Long's First Law of Malfunctions. The
first cause you find won't be the problem.

The first cause won't be *all* of the problem.

My boat is getting drier and drier with every little step along the
way. Feel good about fixing things even when they don't entirely solve
the problem.

Sailing hard last season lead to excess water in the bilge. We
eventually connected that to a shortage of water in the fresh water
tanks. This spring I found a crack in a poly fitting on the tank that
hardly leaked at all sitting in harbour.

Which reminds me that I still need to caulk those openings in the
anchor locker ;-)

Oh, and I agree with your other correspondent that pulling props is a
black art. I managed to deform the end of a shaft with a puller in the
process of tackling a prop change. Heat and well applied impact loads
seem to be important. I had no big problem removing the fixed prop
with about a 2 1/2 inch shaft contact, but removing the Gori folder
with more like 4 inches of contact was beyond me.

Why? Was it a very slow taper, or a straight shaft? With a long slow
taper I can see a wonderful wedging action happening when the retainint
nut is torqued up tight.

PDW

On Mon, 22 May 2006 02:02:50 +0100, in message

Peter Wiley wrote:

In article , Ryk
wrote:
Oh, and I agree with your other correspondent that pulling props is a
black art. I managed to deform the end of a shaft with a puller in the
process of tackling a prop change. Heat and well applied impact loads
seem to be important. I had no big problem removing the fixed prop
with about a 2 1/2 inch shaft contact, but removing the Gori folder
with more like 4 inches of contact was beyond me.

Why? Was it a very slow taper, or a straight shaft? With a long slow
taper I can see a wonderful wedging action happening when the retainint
nut is torqued up tight.

Standard taper in both cases. Both props had been installed for a
*long* time. My guess is that it was just a matter of surface area.

Ryk

In article , Ryk
wrote:

On Mon, 22 May 2006 02:02:50 +0100, in message

Peter Wiley wrote:

In article , Ryk
wrote:
Oh, and I agree with your other correspondent that pulling props is a
black art. I managed to deform the end of a shaft with a puller in the
process of tackling a prop change. Heat and well applied impact loads
seem to be important. I had no big problem removing the fixed prop
with about a 2 1/2 inch shaft contact, but removing the Gori folder
with more like 4 inches of contact was beyond me.

Why? Was it a very slow taper, or a straight shaft? With a long slow
taper I can see a wonderful wedging action happening when the retainint
nut is torqued up tight.

Standard taper in both cases. Both props had been installed for a
*long* time. My guess is that it was just a matter of surface area.

Likely you're right but if it was a std taper either the retaining nut
thread must have been a smaller dia or the shaft dia must have been a
lot greater. If it was the same shaft I don't see mechanically how it's
possible to keep the same taper as before.

It would be a good idea in this sort of situation to relieve the
central portion of the prop hub half a millimeter or so, to reduce the
metal to metal contact area. Easy to do while it's set up for boring
the taper.

PDW